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Finding the Third Proportional to 212,115 and 457,439

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Solution

The third proportional to 212,115 and 457,439 is: 986,495.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,115 : 457,439 = 457,439 : x
  2. Step 2: Convert to fraction form
    212,115/457,439 = 457,439/x
  3. Step 3: Cross multiply
    212,115x = 457,439 × 457,439
  4. Step 4: Simplify right side
    212,115x = 209,250,438,721
  5. Step 5: Solve for x
    x = 209,250,438,721/212,115
  6. Step 6: Final answer
    x = 986,495.24

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.